While Rihanna has given us some anthems that would have your granddad with his top off on the kitchen table, a lot of her songs have been merely ok (what was she thinking with that Coldplay song?). This is more than just the hits. This is about a fundamental change in the way that our attention spans are changing. It's about how we see things as being relevant. Rihanna's relevance is defined by the volume of her output and her ubiquity.